Improvement in paper-drying machines



A. w. KEENY.' PAPER-DRYING MACHINE.

Patented March "I, 1876.

Y INVEJV'TR r I y W ttorneys.

y UNITED STATES PATENT 'OFFICE'.

ALBERT W. KEENY, OF ROCKFORD, ILLINOIS.A

IMPROVEMENT IN PAPER-DRVING MACHINES.

Specification forming part of Letters Patent No. 174,369, dated March 7,1876 application tiled I, November 4, 1875.

To all whom it may concern Be it known that -I, ALBERT W. KEENY, ofRockford, in the'county 0f Winnebago and State of Illinois, havelinvented certain new and useful Improvements in Paper-Drying Machines;and I do hereby declare the following to be a full, clear, and exactdescription of the invention; such as -will 'enable others skilled inthe art to which it pertains to make and use it, reference being had tothe accompanying drawings, which form part vof this specication.

My invention-relates to paper-drying machines, and consists of anarrangement or 'series of hot-air or steam pipes within an inclosedcase, the web of y paper passing backward and forward between the layersof pipes, over rollers at each end of themachine, all as and for thepurposes hereinafter more fully at large will appear.

In the drawings, Figure 1 is a side elevation of the machine, the sidedoor being open 5 Fig. 2, a vertical longitudinal section of same.

A represents the webof paper passing from the common steam-drier Bto thepipe-drier C.

- This pipe-drier consists of a series or layers of pipes, D, placed oneabove the other in the case C. E is the hot-air or steam entrance pipe,whichcommunicates with all the layers of pipes D, and supplies heatthereto. At each end of the case C are mounted anuniher of rollers, F,connected and driven by band or gear, so asto give rotary motionthereto. Gr is the pulley, and g the belt for driving the paper-rollsF., A door, I, may be provided in the side of the drier C for anypurpose.

The operation of the device is as follows: The position ofthe ordinarysteam-driers, the roll-driving pulley, and paper-receiving rolls isshown in dotted lines, so that the complete operation ofthe parts willbe readily understood. The web of paper A passes from the common-steam-drier By to the top portion of the drier C, over the rollers F,through the machine, down to the next layer of pipe D, then back again,and so on, back and forth between the layers of pipes D, to the bottom,where it is taken from the drier and passes between the pair of rolls H.The paper is propelled along by Vthe movement of the pulleyG,communicating motion to the rolls F. Thus` it will be seen the paperis quickly'and el'ectually dried, and by this process the paper is mademuch tougher than it is when dried by the ordinary hot cylinders.

The drier maybe used in connection with the common vcylinder drier, butcan be Worked independently, if desired, by passing the web of paperdirect from the pressrolls to the pipe-drier. The layers of pipe may bemade longer or shorter, more in number or less, according to the dryingcapacity needed.

Having thus 'described my invention, what I claim as new, and desire tosecure by Letters Patent,l isl. In a paper-drier, in combination withthe stationary series of pipes or heater D and incIosing-case v(l,constructed and arranged as described, the rollers F,placcd at each endof the case, opposite each shelf, and in' positiol* to receive and holdthe web of paper in central position between the pipe-shelves, and fromcontact therewith, as and for the purpose described.

2. The paper-drier composed of a system of continuous pipes, D E, allunited together and in a stationary structure, inclosing-case G, door-I, opening into all the series of pipes, and rollers F G, allconstructed, arranged, and adapted to operate as and for the purposedescribed.

In testimony that I claim the foregoing I n have hereunto set my handthis 22d day of October, 1875.

ALBERT W. KEENY.

Witnesses H. W. TAYLOR,

C. SOUTHWORTH.

